{"id":7563,"date":"2025-09-12T12:08:27","date_gmt":"2025-09-12T10:08:27","guid":{"rendered":"https:\/\/podpisano-new.local\/?p=7563"},"modified":"2026-08-18T21:42:17","modified_gmt":"2026-08-18T19:42:17","slug":"podpis-kwalifikowany-w-pdf-z-zoltym-znakiem-zapytania-czy-jest-wazny-i-jak-go-zweryfikowac","status":"publish","type":"post","link":"https:\/\/podpisano.pl\/en\/podpis-kwalifikowany-w-pdf-z-zoltym-znakiem-zapytania-czy-jest-wazny-i-jak-go-zweryfikowac\/","title":{"rendered":"Qualified signature in PDF with yellow question mark - is it valid and how to verify it?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"7563\" class=\"elementor elementor-7563\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1efe208d e-con-full e-flex e-con e-parent\" data-id=\"1efe208d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e75772b elementor-widget elementor-widget-heading\" data-id=\"e75772b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Yellow question mark next to qualified signature in PDF - what does it mean and how to fix it?\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-16ad35f elementor-widget elementor-widget-text-editor\" data-id=\"16ad35f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">If you happened to open a PDF document signed with a qualified electronic signature and saw the following next to it <\/span><b>yellow question mark<\/b><span style=\"font-weight: 400;\">, then you probably thought: \u201eIs the signature invalid?. <\/span><\/p><p><span style=\"font-weight: 400;\">Rest assured - most often there is no reason to panic. This symbol means that the program in which you opened the file,<\/span><b>is not able to fully verify the signature<\/b><span style=\"font-weight: 400;\">, not that the signature is wrong or worthless.<\/span><\/p><p><span style=\"font-weight: 400;\">In this article, we explain:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Which means a yellow question mark in the PDF,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">How the Adobe Approved Trust List (AATL) and the European Union Trusted List (EUTL) work,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">How to update Adobe's lists of trusted institutions,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">why software updates are a cornerstone in digital trust services,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">And what about documents other than PDF.<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-44afccd elementor-widget elementor-widget-heading\" data-id=\"44afccd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Why the yellow sign?\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c372d03 elementor-widget elementor-widget-text-editor\" data-id=\"c372d03\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Adobe Reader relies on so-called trusted vendor lists to verify qualified signatures. If the program can't explicitly check the certificate or doesn't trust the issuer, it will display an \u201eunverified status\u201d message just in the form of a yellow question mark.\u00a0\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a71eb31 elementor-widget elementor-widget-image\" data-id=\"a71eb31\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"165\" src=\"https:\/\/podpisano.pl\/wp-content\/uploads\/2025\/09\/Adobe-zolty-znak-anonim-300x165.jpg\" class=\"attachment-medium size-medium wp-image-7569\" alt=\"Qualified signature in PDF with yellow question mark - is it valid and how to verify it?\" srcset=\"https:\/\/podpisano.pl\/wp-content\/uploads\/2025\/09\/Adobe-zolty-znak-anonim-300x165.jpg 300w, https:\/\/podpisano.pl\/wp-content\/uploads\/2025\/09\/Adobe-zolty-znak-anonim.jpg 477w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c97159 elementor-widget elementor-widget-text-editor\" data-id=\"6c97159\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Most common causes:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">lack of current <\/span><b>Trust Lists<\/b><span style=\"font-weight: 400;\">,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">No connection to the certificate verification server (CRL\/OCSP),<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">no qualified timestamp,<\/span><\/li><li><span style=\"font-weight: 400;\">incomplete certificate chain in the document.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eda4e20 elementor-widget elementor-widget-heading\" data-id=\"eda4e20\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">AATL and EUTL - what is it all about?\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-94580c5 elementor-widget elementor-widget-heading\" data-id=\"94580c5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Adobe Approved Trust List (AATL).\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6e38cca elementor-widget elementor-widget-text-editor\" data-id=\"6e38cca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">This is a global list of vendors whose certificates Adobe recognizes as trustworthy. It gives qualified signatures from the US or Asia, for example, immediate green status in the program.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7843130 elementor-widget elementor-widget-heading\" data-id=\"7843130\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">European Union Trusted List (EUTL)\n\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c68d49e elementor-widget elementor-widget-text-editor\" data-id=\"c68d49e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">This in turn <\/span><b>official list of qualified trust service providers in the European Union<\/b><span style=\"font-weight: 400;\">, published by the European Commission. In Poland, Certum and other certification centers are on it.<\/span><\/p><p><span style=\"font-weight: 400;\">Why do they need to be updated? Because the list of providers changes - new ones appear, others expire, certificates are renewed. Without regular updates, the program will not trust even fully valid and qualified signatures.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c8b820 elementor-widget elementor-widget-heading\" data-id=\"6c8b820\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How to fix the yellow sign in Adobe Reader?\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-772b5d9 elementor-widget elementor-widget-text-editor\" data-id=\"772b5d9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">1 . Go to Menu<\/span><\/p><p><span style=\"font-weight: 400;\">2. select:\u00a0 <\/span><b>Trust manager<\/b><\/p><p><span style=\"font-weight: 400;\">3 Check the option:<\/span><\/p><ul><li><b>Automatic upgrade of Adobe Approved Trust List (AATL<\/b><span style=\"font-weight: 400;\">)<\/span><\/li><li aria-level=\"2\"><b>Load trusted certificates from Adobe AATL server<\/b><\/li><li><span style=\"font-weight: 400;\">click on the button <\/span><b>\u201cupdate now<\/b><span style=\"font-weight: 400;\">\u201d<\/span><\/li><\/ul><p>\u00a0<\/p><p><span style=\"font-weight: 400;\">4 Check the option:<\/span><\/p><ul><li><b>Automatic update of the European Union Trust List (EUTL<\/b><span>)<\/span><\/li><li aria-level=\"2\"><b>Load trusted certificates from Adobe EUTL server<\/b><\/li><li><span style=\"font-weight: 400;\">click on the button <\/span><b>\u201cupdate now<\/b><span style=\"font-weight: 400;\">\u201d<\/span><\/li><\/ul><p>\u00a0<\/p><p><span style=\"font-weight: 400;\">5. confirm by clicking <\/span><b>\u201cOK\u201d<\/b><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ebbaa1a elementor-widget elementor-widget-image\" data-id=\"ebbaa1a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"344\" src=\"https:\/\/podpisano.pl\/wp-content\/uploads\/2025\/09\/Adobe-trust-list-aktualizacja-1024x440.jpg\" class=\"attachment-large size-large wp-image-7582\" alt=\"Yellow question mark next to qualified signature in PDF - what does it mean and how to fix it?\" loading=\"lazy\" srcset=\"https:\/\/podpisano.pl\/wp-content\/uploads\/2025\/09\/Adobe-trust-list-aktualizacja-1024x440.jpg 1024w, https:\/\/podpisano.pl\/wp-content\/uploads\/2025\/09\/Adobe-trust-list-aktualizacja-300x129.jpg 300w, https:\/\/podpisano.pl\/wp-content\/uploads\/2025\/09\/Adobe-trust-list-aktualizacja-768x330.jpg 768w, https:\/\/podpisano.pl\/wp-content\/uploads\/2025\/09\/Adobe-trust-list-aktualizacja-900x386.jpg 900w, https:\/\/podpisano.pl\/wp-content\/uploads\/2025\/09\/Adobe-trust-list-aktualizacja-1200x515.jpg 1200w, https:\/\/podpisano.pl\/wp-content\/uploads\/2025\/09\/Adobe-trust-list-aktualizacja.jpg 1295w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-41fce0b elementor-widget elementor-widget-text-editor\" data-id=\"41fce0b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">From then on, Adobe will use the current trust sources and qualified signatures from, for example, Certum will display as <\/span><b>green - correctly verified<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0beefa7 elementor-widget elementor-widget-heading\" data-id=\"0beefa7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What about documents other than PDF?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3527c7c elementor-widget elementor-widget-text-editor\" data-id=\"3527c7c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Adobe Reader only verifies signatures <\/span><a href=\"https:\/\/podpisano.pl\/en\/podpis-wewnetrzny-a-zewnetrzny-czym-sie-roznia-i-kiedy-je-stosowac\/\"><b>internal<\/b><\/a><b> in PAdES format<\/b><span style=\"font-weight: 400;\"> (i.e., in PDF files). What if you sign the files <\/span><a href=\"https:\/\/podpisano.pl\/en\/cades-xades-czy-pades-porownanie-podpisow-wewnetrznych-i-zewnetrznych\/\"><span style=\"font-weight: 400;\">XML, ZIP, DOCX<\/span><\/a><span style=\"font-weight: 400;\"> or other data?<\/span><\/p><p><span style=\"font-weight: 400;\">Here you need to use <\/span><a href=\"https:\/\/podpisano.pl\/en\/jak-zweryfikowac-podpis-elektroniczny-przewodnik\/\"><span style=\"font-weight: 400;\">dedicated <\/span><\/a><span style=\"font-weight: 400;\">Tools:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>proCertum SmartSign<\/b><span style=\"font-weight: 400;\"> - To verify CAdES and XAdES signatures on a computer,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>WebNotarius<\/b><span style=\"font-weight: 400;\"> - browser-based Certum service, allowing to check signatures in multiple formats without installing additional software.<\/span><span style=\"font-weight: 400;\"><br \/><br \/><\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">We wrote more about this in the article: <\/span><a href=\"https:\/\/podpisano.pl\/en\/jak-zweryfikowac-podpis-elektroniczny-przewodnik\/\"><i><span style=\"font-weight: 400;\">How to verify an electronic signature? PAdES, XAdES and CAdES. Guide<\/span><\/i><\/a><\/p><p><span style=\"font-weight: 400;\">\u00a0- worth a look there if you work with different types of files on a daily basis.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7dfa974 elementor-widget elementor-widget-heading\" data-id=\"7dfa974\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Why are updates crucial?\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6956727 elementor-widget elementor-widget-text-editor\" data-id=\"6956727\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">On the podpisano.pl hotline we often hear: \u201eWhy do I need these updates when everything was working?\u201d. Unfortunately, in the world of digital trust services <\/span><b>\u201eWorked\u201d does not mean \u201estill works\u201d<\/b><span style=\"font-weight: 400;\">. Certificates, trust lists and software are constantly changing, and keeping them up to date is a <\/span><a href=\"https:\/\/podpisano.pl\/en\/aktualizacje-systemu-i-aplikacji-w-uslugach-zaufania-cyfrowego-koniecznosc-czy-klopot\/\"><span style=\"font-weight: 400;\">the foundation of security and reliability of electronic signature<\/span><\/a><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">No updates:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">signatures may look \u201einsecure.\u201d,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The program will not recognize the supplier,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">and you will lose time explaining to the contractor that \u201ea yellow sign is nothing dangerous.\u201d.<\/span><span style=\"font-weight: 400;\"><br \/><br \/><\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-09f9a6a elementor-widget elementor-widget-heading\" data-id=\"09f9a6a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">To sum up...<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ea77411 elementor-widget elementor-widget-text-editor\" data-id=\"ea77411\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The yellow question mark in the PDF next to the qualified signature is <\/span><b>signal of lack of full verification<\/b><span style=\"font-weight: 400;\">, not the invalidity of the signature. The most common culprit is outdated trust lists in Adobe Reader. The solution? Enable and update AATL and EUTL, take care of Internet access and <a href=\"https:\/\/podpisano.pl\/en\/aktualizacje-systemu-i-aplikacji-w-uslugach-zaufania-cyfrowego-koniecznosc-czy-klopot\/\">regular updates<\/a> Software.<\/span><\/p><p><span style=\"font-weight: 400;\">Remember, too, that Adobe is not everything - other document formats require tools such as. <a href=\"https:\/\/podpisano.pl\/en\/jak-zweryfikowac-podpis-elektroniczny-przewodnik\/\">SmartSign or WebNotarius<\/a>, which we have written about in separate articles on podpisano.pl.<\/span><\/p><blockquote><p><b>Because in digital trust services, certainty and timeliness are key<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><\/blockquote>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4a554c3 elementor-widget-divider--view-line_icon elementor-view-default elementor-widget-divider--element-align-center elementor-widget elementor-widget-divider\" data-id=\"4a554c3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon elementor-divider__element\">\n\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-hand-point-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M105.6 83.2v86.177a115.52 115.52 0 0 0-22.4-2.176c-47.914 0-83.2 35.072-83.2 92 0 45.314 48.537 57.002 78.784 75.707 12.413 7.735 23.317 16.994 33.253 25.851l.146.131.148.129C129.807 376.338 136 384.236 136 391.2v2.679c-4.952 5.747-8 13.536-8 22.12v64c0 17.673 12.894 32 28.8 32h230.4c15.906 0 28.8-14.327 28.8-32v-64c0-8.584-3.048-16.373-8-22.12V391.2c0-28.688 40-67.137 40-127.2v-21.299c0-62.542-38.658-98.8-91.145-99.94-17.813-12.482-40.785-18.491-62.791-15.985A93.148 93.148 0 0 0 272 118.847V83.2C272 37.765 234.416 0 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data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Qualified signatures SimplySign and Certum Mini<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8bba10a elementor-widget elementor-widget-text-editor\" data-id=\"8bba10a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"vc_row wpb_row vc_row-fluid vc_custom_1685206387589\"><div class=\"wpb_column vc_column_container vc_col-sm-6\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"wpb_text_column wpb_content_element\"><div class=\"wpb_wrapper\"><p>If you have any concerns or questions, please contact us<\/p><p><strong><a href=\"tel:+48224170555\">+48 22 417 05 55<\/a><\/strong><\/p><p>We'll answer your questions, find a time that works for you, and match you with an advisor at one of our locations throughout Poland.<\/p><p>You can also write an email from us\u00a0<strong><a href=\"mailto:kontakt@podpisano.pl\">contact@podpisano.pl.<\/a><\/strong>\u00a0<\/p><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-13d30fb e-con-full e-flex e-con e-child\" data-id=\"13d30fb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8d92a82 elementor-widget elementor-widget-theme-site-logo elementor-widget-image\" data-id=\"8d92a82\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-site-logo.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/podpisano.pl\/en\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"394\" src=\"https:\/\/podpisano.pl\/wp-content\/uploads\/2024\/06\/podpisano.pl-autoryzowany-partenr-Certum.png\" class=\"attachment-full size-full wp-image-5452\" alt=\"podpisano.pl - authorized partner of Certum\" srcset=\"https:\/\/podpisano.pl\/wp-content\/uploads\/2024\/06\/podpisano.pl-autoryzowany-partenr-Certum.png 500w, https:\/\/podpisano.pl\/wp-content\/uploads\/2024\/06\/podpisano.pl-autoryzowany-partenr-Certum-300x236.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/>\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>See the yellow question mark in Adobe Reader next to the qualified signature? Relax - the signature doesn't have to be invalid at all. We explain where this message comes from and how to fix it.<\/p>","protected":false},"author":322,"featured_media":7590,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[139],"tags":[314,296,290,291],"class_list":["post-7563","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-podpisy-kwalifikowane","tag-dokumenty-elektroniczne","tag-podpis-elektroniczny","tag-podpis-kwalifikowany","tag-weryfikacja-podpisu-kwalifikowanego"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Podpis kwalifikowany w PDF z \u017c\u00f3\u0142tym znakiem zapytania \u2013 czy jest wa\u017cny i jak go zweryfikowa\u0107? - Podpisano.pl<\/title>\n<meta name=\"description\" content=\"\u017b\u00f3\u0142ty znak zapytania przy podpisie elektronicznym w PDF nie oznacza niewa\u017cno\u015bci. 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